Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. The authors present a novel approach to perform on line monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor (APS). The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental set-up: the number of pho-tons and the generated charge have been assessed as dosimetric observables. The correlation of these observables with the dose measured by the passive dosimeters has been analyzed: a good linearity has been demonstrated and the response dif-ference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.
A Dosimetric Device Based on a CMOS Image Sensor for Interventional Radiology
CONTI, ELIA;PLACIDI, Pisana;BISSI, LUCIA;PASSERI, Daniele;SCORZONI, Andrea;
2014
Abstract
Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. The authors present a novel approach to perform on line monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor (APS). The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental set-up: the number of pho-tons and the generated charge have been assessed as dosimetric observables. The correlation of these observables with the dose measured by the passive dosimeters has been analyzed: a good linearity has been demonstrated and the response dif-ference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
